first spotted thought was a helicopter with search light. As it came closer we noticed that there was no sound and was traveling extreamly slow, est. 5 mph. came within 200 yards of our position. At that time the sky became full of military planes and 2 chase jets. 1 jet came within a few hundred yards of the craft at which time it rose to 500 feet and literally vanished in a light trail. I have since created the craft in autocad 3d.